Paleoenvironmental surveys, using diatom assemblage analysis, have been carried out in Akkeshi Moor and its surroundings to obtain records of Holocene sea-level changes. Fossil diatom assemblages and radiocarbon ages of drilled core samples from three sites in the moor were examined, demonstrating relative sea-level fluctuations during the last five thousand years, with the following sequence of events: a shallow bay spread over most of Akkeshi Moor, with gregarious oysters around the moor (ca. 4700 yr B.P.); the sea-level dropped to about 1 meter below the present level (ca. 2700 yr B.P.); the sea-level then rose to about 1 meter above the present level (ca. 1000 yr B.P.). Moor vegetation formed after this transgression.
|Number of pages||11|
|Publication status||Published - Dec 1 1996|
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